:root{--fg:#0f172a;--bg:#f8fafc;--card:#ffffff;--muted:#475569;--accent:#2563eb;--border:#e5e7eb}
*{box-sizing:border-box}body{margin:0;color:var(--fg);background:var(--bg);font:16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial}
a{color:var(--accent);text-decoration:none}
.container{max-width:980px;margin:0 auto;padding:16px}
.topbar{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:saturate(160%) blur(6px);border-bottom:1px solid var(--border);z-index:10}
.topbar nav{display:flex;gap:12px;align-items:center}
.brand{font-weight:700;margin-right:12px}
.spacer{flex:1}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0;box-shadow:0 2px 10px rgba(0,0,0,.03)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;border:1px solid var(--border);padding:8px 12px;border-radius:8px;text-align:center}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:#fff}
label{display:block;margin-bottom:6px;font-weight:600}
.small{font-size:.875rem;color:var(--muted)}
table{width:100%;border-collapse:collapse}th,td{padding:8px;border-bottom:1px solid var(--border)}th{text-align:left}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#eef2ff;border:1px solid var(--border);font-size:.8rem}
.streak-num{font-size:1.6rem;font-weight:700}

/* dark mode */
:root[data-theme='dark']{ --fg:#e5e7eb; --bg:#0b1020; --card:#111827; --muted:#9ca3af; --accent:#38bdf8; --border:#1f2937; }
:root[data-theme='dark'] .topbar{ background: rgba(17,24,39,.8); }
:root[data-theme='dark'] input, :root[data-theme='dark'] textarea, :root[data-theme='dark'] select { background:#0f172a; color:var(--fg); border-color:#334155; }
:root[data-theme='dark'] .badge{ background:#1f2937; }

/* Toast */
.toast{ position:fixed; right:16px; bottom:16px; background:var(--card); color:var(--fg); border:1px solid var(--border); border-radius:10px; padding:10px 14px; box-shadow:0 6px 24px rgba(0,0,0,.2); opacity:0; transform:translateY(8px); transition:all .2s ease; }
.toast.show{ opacity:1; transform:translateY(0); }

.theme-toggle{ cursor:pointer; border:1px solid var(--border); padding:6px 10px; border-radius:8px; font-size:.9rem; }
.slider-row{ display:grid; grid-template-columns:1fr 60px; gap:10px; align-items:center; }
.value-pill{ display:inline-block; min-width:44px; text-align:center; padding:4px 8px; border-radius:999px; background:#eef2ff; }
:root[data-theme='dark'] .value-pill{ background:#1f2937; }

/* Chips */
.chips{ display:flex; gap:8px; flex-wrap:wrap; padding:6px; border:1px dashed var(--border); border-radius:8px; }
.chip{ display:inline-flex; align-items:center; gap:6px; padding:4px 8px; border-radius:999px; background:#f1f5f9; }
:root[data-theme='dark'] .chip{ background:#1f2937; }
.chip button{ border:none; background:none; cursor:pointer; }

/* Mobile-friendly form tweaks */
@media (max-width: 768px) {
  .row, .row-3 { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .actions .btn, .actions button { width: 100%; }
  .checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .card { margin: 12px 0; padding: 14px; }
  input, select, textarea { font-size: 16px; /* prevent iOS zoom */ }
  .sticky-actions {
    position: sticky; bottom: 0; left: 0; right: 0;
    background: var(--card, #fff);
    border-top: 1px solid var(--border, #e5e7eb);
    padding: 10px; margin: 0 -16px -16px;
    box-shadow: 0 -8px 24px rgba(0,0,0,.05);
    display: grid; gap: 8px;
  }
}
/* Dark theme variables */
:root[data-theme='dark'], html[data-theme='dark']{
  --fg:#e5e7eb; --bg:#0b1020; --card:#111827; --muted:#9ca3af; --accent:#38bdf8; --border:#1f2937;
}

/* Examples of elements that should respond */
:root[data-theme='dark'] .topbar, html[data-theme='dark'] .topbar{ background: rgba(17,24,39,.8); }
:root[data-theme='dark'] input,
:root[data-theme='dark'] textarea,
:root[data-theme='dark'] select,
html[data-theme='dark'] input,
html[data-theme='dark'] textarea,
html[data-theme='dark'] select{ background:#0f172a; color:var(--fg); border-color:#334155; }

:root[data-theme='dark'] .badge,
html[data-theme='dark'] .badge{ background:#1f2937; }

/* Touch targets */
label { margin-bottom: 6px; }
.checks label { display: inline-flex; align-items: center; gap: 8px; padding: 6px 8px; border: 1px solid var(--border, #e5e7eb); border-radius: 10px; }
.checks input[type="checkbox"] { width: 18px; height: 18px; }

/* Nice textareas */
textarea { min-height: 80px; resize: vertical; }
 .empty { text-align:center; color: var(--muted); font-style: italic; padding: 20px; }
/* Boxed layout on desktop */
@media (min-width: 1100px){
  body.boxed{ background: #f3f6fb; } /* soft page background behind the box */
  body.boxed .topbar{
    background: transparent;
    border-bottom: none;
  }
  body.boxed .topbar .container{
    max-width: 1100px;
  }
  body.boxed .page-box{
    max-width: 1100px;
    margin: 24px auto 40px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 12px 32px rgba(0,0,0,.06);
  }
}
/* Brand w/ logo image */
.brand{ display:flex; align-items:center; gap:10px; font-weight:700; color:var(--fg); }
.brand-logo{ height:65px; width:auto; display:block; }
/* Topbar nav links */
.topbar nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--fg);
  padding: 6px 10px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.topbar nav a:hover {
  background: rgba(0,0,0,0.05);
  color: var(--accent);
}

:root[data-theme='dark'] .topbar nav a:hover {
  background: rgba(255,255,255,0.08);
}

.topbar nav {
  gap: 20px; /* ?? wider spacing between items */
}
/* Primary action button */
button[type="submit"] {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

button[type="submit"]:hover {
  background: #1d4ed8; /* darker shade of accent */
}

button[type="submit"]:active {
  transform: scale(0.97);
}

:root[data-theme='dark'] button[type="submit"] {
  background: var(--accent);
  color: #fff;
}

  /* --- Responsive Header Nav --- */
.site-nav{ display:flex; align-items:center; gap:16px; }
.site-nav .links{ display:flex; align-items:center; gap:20px; }
.nav-toggle{ display:none; position:relative; width:36px; height:32px; border:1px solid var(--border); border-radius:8px; background:var(--card); }
.nav-toggle .bar{ position:absolute; left:7px; right:7px; height:2px; background:var(--fg); border-radius:2px; }
.nav-toggle .bar:nth-child(1){ top:9px; }
.nav-toggle .bar:nth-child(2){ top:15px; }
.nav-toggle .bar:nth-child(3){ top:21px; }

/* Mobile layout */
@media (max-width: 768px){
  .site-nav{ display:grid; grid-template-columns: 1fr auto; align-items:center; }
  .brand{ gap:10px; font-size:1rem; }
  .brand-logo{ height:50px; }
  .brand-logo{ height:50px; }
  .site-nav .links{
    grid-column: 1 / -1;
    display:none;               /* hidden by default */
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
    padding:12px 0 8px;
    border-top:1px solid var(--border);
    margin-top:8px;
  }
  .site-nav .links.open{ display:flex; }
  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .topbar nav a{ padding:6px 2px; } /* tighter per-item padding on phone */
  .topbar nav{ gap:10px; }          /* smaller gap on phone */
  .theme-toggle{ width:100%; text-align:left; }
}
 /* --- Mobile nav dropdown (absolute panel) --- */
@media (max-width: 768px){
  .site-nav{ position: relative; }              /* anchor for absolute panel */
  .nav-toggle{
    display:inline-flex; align-items:center; justify-content:center;
    width:36px; height:32px; border:1px solid var(--border);
    border-radius:8px; background:var(--card);
  }
  .nav-toggle .bar{ position:absolute; left:8px; right:8px; height:2px; background:var(--fg); border-radius:2px; }
  .nav-toggle .bar:nth-child(1){ top:9px; }
  .nav-toggle .bar:nth-child(2){ top:15px; }
  .nav-toggle .bar:nth-child(3){ top:21px; }

  /* The dropdown panel */
  .site-nav .links{
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;                     /* closed by default */
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    margin-top: 8px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 24px rgba(0,0,0,.08);
    z-index: 50;                        /* sit above content */
  }
  .site-nav .links.open{ display: flex; }

  /* tidy internals */
  .site-nav .links .spacer{ display:none; }
  .topbar nav a{ padding: 6px 6px; }    /* tighter per-item padding on phone */
  .topbar nav{ gap: 10px; }
}

/* Ensure topbar sits above the dropdown */
.topbar{ position: sticky; top: 0; z-index: 60; }